This is the O.S. Max .21 TM Engine with the Revo Manifold (also fits Traxxas Slayer). This engine will be a direct drop in for the Traxxas 2.5 and 3.3 Revo or the Slayer Pro. The .21 TM will adapt directly to the Traxxas EZ start or pull start systems. The O.S. .21 TM engine is for serious racers and backyard bashers alike that are ready for some major power.

This is the O.S. Max .21 TM Engine with the Revo Manifold (also fits Traxxas Slayer). This engine will be a direct drop in for the Traxxas 2.5 and 3.3 Revo or the Slayer Pro. The .21 TM will adapt directly to the Traxxas EZ start or pull start systems. The O.S. .21 TM engine is for serious racers and backyard bashers alike that are ready for some major power.